12738445451 has 2 divisors, whose sum is σ = 12738445452. Its totient is φ = 12738445450.

The previous prime is 12738445427. The next prime is 12738445463. The reversal of 12738445451 is 15454483721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12738445451 is a prime.

It is not a weakly prime, because it can be changed into another prime (12738445651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369222725 + 6369222726.

It is an arithmetic number, because the mean of its divisors is an integer number (6369222726).

Almost surely, 2^12738445451 is an apocalyptic number.

12738445451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12738445451 is an equidigital number, since it uses as much as digits as its factorization.

12738445451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 44.

The spelling of 12738445451 in words is "twelve billion, seven hundred thirty-eight million, four hundred forty-five thousand, four hundred fifty-one".